"Thus far, the game has an average score of 9.5/10 on Metacritic.com, which is almost unprecedented and puts it on par with Halo 3. It certainly is the highest-rated game Activision has ever created. Keep in mind, CoD4 is launching on four times as many platforms (Xbox 360, PlayStation3, PC, DS) as Halo 3 (360 only). Halo 3 has so far sold about 4 million units. A year ago, Call of Duty 3 sold about 3 million units, and we anticipate this year's version could do four million or more."